Trivia

This is the first time that a Foster's character set foot in the Ed, Edd n Eddy universe, but The Eds made a cameo in the "Eddie Monster" episode of Foster's Home for Imaginary Friends as spectators in a junkyard.

Interestingly enough, the episode in which they appeared was one primarily focused on Eduardo.

Eduardo appears again inside the Cul-de-sac castle with Eddy in the online game FusionFall, however Edd and Ed aren't with them. (This is only true in the Future part; in the Past, Edd and Eddy are in the castle, but Eduardo's place is taken by Wilt).